<!--
 * Tencent is pleased to support the open source community by making BK-JOB蓝鲸智云作业平台 available.
 *
 * Copyright (C) 2021 THL A29 Limited, a Tencent company.  All rights reserved.
 *
 * BK-JOB蓝鲸智云作业平台 is licensed under the MIT License.
 *
 * License for BK-JOB蓝鲸智云作业平台:
 *
 *
 * Terms of the MIT License:
 * ---------------------------------------------------
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
 * documentation files (the "Software"), to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and
 * to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies or substantial portions of
 * the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
 * THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
 * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 * IN THE SOFTWARE.
-->

<template>
    <div
        id="app"
        :class="{
            'viewport-full': isViewportFull,
            fixed: sideFixed,
        }">
        <div class="jb-navigation">
            <div class="jb-navigation-header">
                <div class="header-left" :style="headerLeftStyles">
                    <slot name="header" />
                </div>
                <div class="header-center">
                    <slot name="headerCenter" />
                </div>
                <div class="header-right">
                    <slot name="headerRight" />
                </div>
            </div>
            <div
                class="jb-navigation-side"
                :style="sideStyles"
                @mouseenter="handleSideMouseenter"
                @mouseleave="handleSideMouseleave">
                <slot name="sideAppendBefore" />
                <div class="side-wrapper">
                    <scroll-faker theme="dark">
                        <slot name="side" />
                    </scroll-faker>
                </div>
                <div class="side-footer">
                    <Icon
                        class="fixed-flag"
                        type="expand-line"
                        @click="handleSideFixedToggle" />
                </div>
            </div>
            <div class="jb-navigation-main" :style="mainStyles">
                <div class="jb-navigation-body-header" :style="bodyHeaderStyles">
                    <slot name="contentHeader" />
                </div>
                <scroll-faker ref="contentScroll" :style="scrollStyles">
                    <div class="jb-navigation-content" :style="contentStyles">
                        <div class="navigation-content-wrapper">
                            <slot />
                        </div>
                    </div>
                </scroll-faker>
            </div>
        </div>
    </div>
</template>
<script>
    import _ from 'lodash';

    const PAGE_MIN_WIDTH = 1366;
    const PAGE_MIDDLE_WIDTH = 1920;
    const SIDE_LEFT_EXPAND_SMALL_WIDTH = 220;
    const SIDE_LEFT_EXPAND_BIG_WIDTH = 280;
    const SIDE_LEFT_INEXPAND_WIDTH = 60;

    export default {
        name: 'job-site-frame',
        props: {
            sideFixed: {
                type: Boolean,
                default: false,
            },
        },
        data () {
            return {
                isViewportFull: false,
                isSideHover: false,
                pageWidth: PAGE_MIN_WIDTH,
                sideLeftExpandWidth: 0,
            };
        },
        computed: {
            realSideWidth () {
                return this.sideFixed ? this.sideLeftExpandWidth : SIDE_LEFT_INEXPAND_WIDTH;
            },
            headerLeftStyles () {
                return {
                    width: `${this.sideLeftExpandWidth}px`,
                };
            },
            sideStyles () {
                if (this.isSideHover) {
                    return {
                        width: `${this.sideLeftExpandWidth}px`,
                        zIndex: 2000,
                    };
                }
                return {
                    width: `${this.realSideWidth}px`,
                };
            },
            mainStyles () {
                return {
                    marginLeft: `${this.realSideWidth}px`,
                    zIndex: 1999,
                };
            },
            bodyHeaderStyles () {
                return {
                    left: `${this.realSideWidth}px`,
                };
            },
            scrollStyles () {
                const navigationHeaderHeight = 52;
                const contentHeaderHeight = 52;
                return {
                    width: `calc(100vw - ${this.realSideWidth}px)`,
                    height: `calc(100vh - ${navigationHeaderHeight + contentHeaderHeight}px)`,
                };
            },
            contentStyles () {
                return {
                    width: `${this.pageWidth - this.realSideWidth}px`,
                };
            },
        },
        watch: {
            /**
             * @desc 页面标题
             */
            $route: {
                handler (route) {
                    this.isViewportFull = Boolean(route.meta.full);
                    setTimeout(() => {
                        this.$refs.contentScroll.scrollTo(0, 0);
                    });
                },
                immediate: true,
            },
        },
        mounted () {
            this.init();
            const resizeHandler = _.throttle(this.init, 100);
            window.addEventListener('resize', resizeHandler);
            this.$once('hook:beforeDestroy', () => {
                window.removeEventListener('resize', resizeHandler);
            });
        },
        methods: {
            /**
             * @desc 初始化动态计算布局尺寸
             */
            init () {
                const windowInnerWidth = window.innerWidth;
                this.pageWidth = windowInnerWidth < PAGE_MIN_WIDTH ? PAGE_MIN_WIDTH : windowInnerWidth;
                this.sideLeftExpandWidth = windowInnerWidth < PAGE_MIDDLE_WIDTH ? SIDE_LEFT_EXPAND_SMALL_WIDTH : SIDE_LEFT_EXPAND_BIG_WIDTH;
            },
            /**
             * @desc 鼠标移入
             */
            handleSideMouseenter () {
                clearTimeout(this.hoverTimer);
                this.hoverTimer = setTimeout(() => {
                    this.isSideHover = true;
                    this.$emit('on-side-expand', this.isSideHover);
                }, 50);
            },
            /**
             * @desc 鼠标移出
             */
            handleSideMouseleave () {
                clearTimeout(this.hoverTimer);
                this.hoverTimer = setTimeout(() => {
                    this.isSideHover = false;
                    this.$emit('on-side-expand', this.isSideHover);
                }, 50);
            },
            /**
             * @desc 切换左侧面板是否固定的状态
             */
            handleSideFixedToggle () {
                this.$emit('on-side-fixed');
            },
        },
    };
</script>
<style lang="postcss">
    #app {
        &.viewport-full {
            .navigation-content-wrapper {
                padding: 0 !important;
            }
        }

        &.fixed {
            .jb-navigation {
                .fixed-flag {
                    transform: rotateZ(180deg) !important;
                }

                .jb-navigation-side {
                    transition: none;
                }

                .jb-navigation-main {
                    margin-left: 220px;
                }
            }
        }
    }

    .jb-navigation {
        line-height: 19px;

        .jb-navigation-header {
            position: fixed;
            top: 0;
            right: 0;
            left: 0;
            z-index: 2000;
            display: flex;
            align-items: center;
            height: 52px;
            font-size: 14px;
            color: #96a2b9;
            background: #182233;

            .header-left {
                display: flex;
                flex: 0 0 auto;
                align-items: center;
                padding-left: 16px;
            }

            .header-right {
                display: flex;
                align-items: center;
                padding-right: 16px;
                margin-left: auto;
            }
        }

        .jb-navigation-side {
            position: fixed;
            top: 52px;
            bottom: 0;
            left: 0;
            z-index: 2000;
            display: flex;
            width: 220px;
            padding-top: 10px;
            font-size: 14px;
            background: #131824;
            transition: all 0.3s;
            flex-direction: column;

            .side-wrapper {
                width: 100%;
                overflow: hidden;
                flex: 1 1 auto;
            }

            .side-footer {
                display: flex;
                height: 56px;
                margin-top: auto;
                margin-left: 16px;
                font-size: 16px;
                color: #747e94;
                align-items: center;

                .fixed-flag {
                    padding: 8px;
                    cursor: pointer;
                    border-radius: 50%;
                    transform: rotateZ(0deg);
                    transition: all 0.15s;

                    &:hover {
                        color: #d3d9e4;
                        background: linear-gradient(270deg, #253047, #263247);
                    }
                }
            }
        }

        .jb-navigation-main {
            margin-top: 104px;
        }

        .jb-navigation-body-header {
            position: fixed;
            top: 52px;
            right: 0;
            left: 220px;
            z-index: 1999;
            display: flex;
            align-items: center;
            height: 52px;
            padding-right: 24px;
            padding-left: 24px;
            font-size: 16px;
            color: #313238;
            background: #fff;
            box-shadow: 0 2px 4px 0 rgba(0, 0, 0, 0.1);
        }

        .jb-navigation-content {
            background: #f5f6fa;

            .navigation-content-wrapper {
                position: relative;
                padding: 20px 24px 0;
            }
        }
    }
</style>
